201203312045 has 4 divisors (see below), whose sum is σ = 241443974460. Its totient is φ = 160962649632.

The previous prime is 201203312041. The next prime is 201203312059. The reversal of 201203312045 is 540213302102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96587937796 + 104615374249 = 310786^2 + 323443^2 .

It is a cyclic number.

It is not a de Polignac number, because 201203312045 - 2² = 201203312041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201203312045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201203312041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20120331200 + ... + 20120331209.

It is an arithmetic number, because the mean of its divisors is an integer number (60360993615).

Almost surely, 2^201203312045 is an apocalyptic number.

It is an amenable number.

201203312045 is a deficient number, since it is larger than the sum of its proper divisors (40240662415).

201203312045 is an equidigital number, since it uses as much as digits as its factorization.

201203312045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40240662414.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 201203312045 its reverse (540213302102), we get a palindrome (741416614147).

The spelling of 201203312045 in words is "two hundred one billion, two hundred three million, three hundred twelve thousand, forty-five".